Home / 13,463.20-18,568.20-8,739.28

Finding the Fourth Proportional to 13,463.20, 18,568.20 and 8,739.28

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Solution

The fourth proportional to 13,463.20, 18,568.20 and 8,739.28 is: 12,053.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,463.20 : 18,568.20 = 8,739.28 : x
  2. Step 2: Convert to fraction form
    13,463.20/18,568.20 = 8,739.28/x
  3. Step 3: Cross multiply
    13,463.20x = 18,568.20 × 8,739.28
  4. Step 4: Simplify right side
    13,463.20x = 162,272,698.90
  5. Step 5: Solve for x
    x = 162,272,698.90/13,463.20
  6. Step 6: Final answer
    x = 12,053.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.